magazine covers, trying new imagery/concepts

I have tried a new approach, I want to use shapes and representation of what I am trying to communicate, through a less obvious way. 

I want to use different shapes and lines to create different representations of the ocean, but with hints of their specific message involved within the image.

Here I am involving a net/tangled version of the sea, to show the catching of fish, entrapment. 

The white silhouette of the fish represents the gap. I am thinking of having all of the covers with some sort of white shape, that relates to the topic.

Another representation of the sea, but with a hint of cloud/smokey pollution. The circular shape representing the 'gap in the ocean', but also having this repetition of shapes.

A series of waves, that appear more as layers overlapping. The ocean but as it overflowing, flooding the house, expressing how sea levels are rising.

 

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 the 4th topic is to communicate how there is excessive growth of dense algal mats which blanket the seabed and foreshore. I thought I could manipulate the actual pattern to help communicate the toxic sea bed:

 

I have played around with the anchor points to make the swirls more edgey/jagged. I need a shape though,

one of the causes of the toxic algae that is covering the sea bed, is that it is causing environments and habitats to deteriorate, which is killing off species, including sea turtles.

These still need development, and I am thinking about maybe producing different series? I also want to think about considering these more within the magazine layout/context, and also how each issue could be a different shade of blue. I want to keep the colours blue to help communicate the series being all focused around marine threats.